Help Center/ TaurusDB/ API Reference/ APIs (Recommended)/ Intelligent Diagnosis/ Querying Abnormal Instance Information by a Specific Metric
Updated on 2026-01-05 GMT+08:00

Querying Abnormal Instance Information by a Specific Metric

Function

This API is used to query abnormal instance information by a specific metric. Before calling this API:

Calling Method

For details, see Calling APIs.

Authorization Information

Each account has all the permissions required to call all APIs, but IAM users must be assigned the required permissions.

  • If you are using role/policy-based authorization, see Permissions and Supported Actions for details on the required permissions.
  • If you are using identity policy-based authorization, the following identity policy-based permissions are required.

    Action

    Access Level

    Resource Type (*: required)

    Condition Key

    Alias

    Dependency

    gaussdbformysql:instance:list

    List

    -

    -

    gaussdb:instance:list

    -

URI

GET /v3/{project_id}/instances/diagnosis-instance-infos

Table 1 URI parameter

Parameter

Mandatory

Type

Description

project_id

Yes

String

Definition

Project ID of a tenant in a region.

To obtain this value, see Obtaining a Project ID.

Constraints

N/A

Range

The value contains 32 characters. Only letters and digits are allowed.

Default Value

N/A

Table 2 Query parameters

Parameter

Mandatory

Type

Description

metric_name

Yes

String

Definition

Metric name.

Constraints

N/A

Range

  • high_pressure: high vCPU utilization

  • insufficient_capacity: insufficient capacity

  • slow_sql_frequency: high-frequency slow SQL

  • mem_overrun: memory bottleneck

  • connections_exceed: too many connections

Default Value

N/A

offset

Yes

Integer

Definition

Index offset. The query starts from the next piece of data indexed by this parameter.

Constraints

The value cannot be a negative number.

Range

≥ 0

Default Value

0

limit

Yes

Integer

Definition

Number of records to be queried.

Constraints

The value cannot be a negative number.

Range

1–100

Default Value

100

Request Parameters

Table 3 Request header parameters

Parameter

Mandatory

Type

Description

X-Auth-Token

Yes

String

Definition

User token. To obtain this value, call the IAM API for obtaining a user token.

The value of X-Subject-Token in the response header is the token value.

Constraints

N/A

Range

N/A

Default Value

N/A

X-Language

No

String

Definition

Request language type.

Constraints

N/A

Range

  • en-us

  • zh-cn

Default Value

en-us

Response Parameters

Status code: 200

Table 4 Response body parameters

Parameter

Type

Description

total_count

Integer

Definition

Number of abnormal instances queried by the current metric.

Range

N/A

instance_infos

Array of InstanceInfoForDiagnosis objects

Definition

Information about the abnormal instances.

Table 5 InstanceInfoForDiagnosis

Parameter

Type

Description

instance_id

String

Definition

Instance ID.

Range

The value contains 36 characters with a suffix of in07. Only letters and digits are allowed.

master_node_id

String

Definition

Primary node ID.

Range

The value contains 36 characters with a suffix of no07. Only letters and digits are allowed.

Status code: 400

Table 6 Response body parameters

Parameter

Type

Description

error_code

String

Error code.

error_msg

String

Error message.

Status code: 500

Table 7 Response body parameters

Parameter

Type

Description

error_code

String

Error code.

error_msg

String

Error message.

Example Request

Querying abnormal instance information based on project_id and a metric name (The information is displayed on multiple pages.)

GET https://{endpoint}/v3/0483b6b16e954cb88930a360d2c4e663/instances/diagnosis-instance-infos?metric_name=high_pressure&offset=0&limit=10

Example Response

Status code: 200

Success.

{
  "total_count" : 6,
  "instance_infos" : [ {
    "instance_id" : "6206d5be05914703938ff9dfe5c07d34in07",
    "master_node_id" : "7fe925aa8bab4cc9bac3990a94386c29no07"
  }, {
    "instance_id" : "cbdb32e08f0440158c4f2998dbf69b14in07",
    "master_node_id" : "3e90e7b99b964dca9704b3af903fcb41no07"
  }, {
    "instance_id" : "325af119c2ca4e77b1deb4810a9b921bin07",
    "master_node_id" : "f4dfb362039a45818e59416abc9a5ca6no07"
  }, {
    "instance_id" : "9e8b52a5b6e84f4a9e4db01235b1c770in07",
    "master_node_id" : "408666cd6f104133ad0685b722f88cffno07"
  }, {
    "instance_id" : "5814254f12f74d16bd0a93885b00867fin07",
    "master_node_id" : "637d96ffbf6745ff835445fe87d08fc5no07"
  }, {
    "instance_id" : "d0da4882ebdf44bd9d3f1edf9b0bd4a2in07",
    "master_node_id" : "7a670f4ecdf14db5a4b5df737b0911a5no07"
  } ]
}

SDK Sample Code

The SDK sample code is as follows.

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package com.huaweicloud.sdk.test;

import com.huaweicloud.sdk.core.auth.ICredential;
import com.huaweicloud.sdk.core.auth.BasicCredentials;
import com.huaweicloud.sdk.core.exception.ConnectionException;
import com.huaweicloud.sdk.core.exception.RequestTimeoutException;
import com.huaweicloud.sdk.core.exception.ServiceResponseException;
import com.huaweicloud.sdk.gaussdb.v3.region.GaussDBRegion;
import com.huaweicloud.sdk.gaussdb.v3.*;
import com.huaweicloud.sdk.gaussdb.v3.model.*;


public class ShowIntelligentDiagnosisInstanceInfosPerMetricSolution {

    public static void main(String[] args) {
        // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
        // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
        String ak = System.getenv("CLOUD_SDK_AK");
        String sk = System.getenv("CLOUD_SDK_SK");
        String projectId = "{project_id}";

        ICredential auth = new BasicCredentials()
                .withProjectId(projectId)
                .withAk(ak)
                .withSk(sk);

        GaussDBClient client = GaussDBClient.newBuilder()
                .withCredential(auth)
                .withRegion(GaussDBRegion.valueOf("<YOUR REGION>"))
                .build();
        ShowIntelligentDiagnosisInstanceInfosPerMetricRequest request = new ShowIntelligentDiagnosisInstanceInfosPerMetricRequest();
        try {
            ShowIntelligentDiagnosisInstanceInfosPerMetricResponse response = client.showIntelligentDiagnosisInstanceInfosPerMetric(request);
            System.out.println(response.toString());
        } catch (ConnectionException e) {
            e.printStackTrace();
        } catch (RequestTimeoutException e) {
            e.printStackTrace();
        } catch (ServiceResponseException e) {
            e.printStackTrace();
            System.out.println(e.getHttpStatusCode());
            System.out.println(e.getRequestId());
            System.out.println(e.getErrorCode());
            System.out.println(e.getErrorMsg());
        }
    }
}
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# coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkgaussdb.v3.region.gaussdb_region import GaussDBRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkgaussdb.v3 import *

if __name__ == "__main__":
    # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak = os.environ["CLOUD_SDK_AK"]
    sk = os.environ["CLOUD_SDK_SK"]
    projectId = "{project_id}"

    credentials = BasicCredentials(ak, sk, projectId)

    client = GaussDBClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(GaussDBRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = ShowIntelligentDiagnosisInstanceInfosPerMetricRequest()
        response = client.show_intelligent_diagnosis_instance_infos_per_metric(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)
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package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    gaussdb "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/gaussdb/v3"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/gaussdb/v3/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/gaussdb/v3/region"
)

func main() {
    // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak := os.Getenv("CLOUD_SDK_AK")
    sk := os.Getenv("CLOUD_SDK_SK")
    projectId := "{project_id}"

    auth := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        WithProjectId(projectId).
        Build()

    client := gaussdb.NewGaussDBClient(
        gaussdb.GaussDBClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.ShowIntelligentDiagnosisInstanceInfosPerMetricRequest{}
	response, err := client.ShowIntelligentDiagnosisInstanceInfosPerMetric(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

For SDK sample code of more programming languages, see the Sample Code tab in API Explorer. SDK sample code can be automatically generated.

Status Code

For details, see Status Codes.

Error Code

For details, see Error Codes.